%0 Journal Article %T Recense %J Applications of Mathematics %D 1969 %P 337-340 %V 14 %N 4 %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1969.103240/ %R 10.21136/AM.1969.103240 %G cs %F 10_21136_AM_1969_103240